No, Ultra Blue® is a silicone-based product, that will offer a good seal, and has good resistance to oil and coolant, however, silicones are not recommended for use in a gasoline environment. The gasoline will attack the product.Click to see full answer. Similarly, does gasoline dissolve silicone?As for silicone, yeah, it breaks-down in gasoline. Not only will it leak, but you will find that it will also be clogging your fuel filter, carburetor or injectors soon. This is why you should make a gasket.Furthermore, does Flex Seal eat gasoline? A: We do not recommend using Flex Seal Liquid® to seal a gasoline tank or any in contact with other flammable liquids. People also ask, what is the best sealant for gasoline? Permatex PermaShield Fuel Resistant Gasket Dressing and Sealant is a polyester urethane sealant with strong resistance to gasoline and all other automotive fluids, making it excellent for a variety of applications, including oil pans, axle assemblies and fuel injectors.Does gasoline dissolve Teflon tape?You are not supposed to use teflon tape with gasoline applications, supposedly it dissolves. However, it sounds like you want a sealant like permatex pli-a-seal or something.

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